131328499 has 4 divisors (see below), whose sum is σ = 131354560. Its totient is φ = 131302440.

The previous prime is 131328479. The next prime is 131328511. The reversal of 131328499 is 994823131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131328499 - 2¹¹ = 131326451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131328409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2787 + ... + 16444.

It is an arithmetic number, because the mean of its divisors is an integer number (32838640).

Almost surely, 2^131328499 is an apocalyptic number.

131328499 is a deficient number, since it is larger than the sum of its proper divisors (26061).

131328499 is an equidigital number, since it uses as much as digits as its factorization.

131328499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26060.

The product of its digits is 46656, while the sum is 40.

The square root of 131328499 is about 11459.8647025172. The cubic root of 131328499 is about 508.2994738951.

The spelling of 131328499 in words is "one hundred thirty-one million, three hundred twenty-eight thousand, four hundred ninety-nine".